modeling-app/docs/kcl-std/functions/std-solid-hollow.md

title, subtitle, excerpt, layout

title	subtitle	excerpt	layout
hollow	Function in std::solid	Make the inside of a 3D object hollow.	manual

Make the inside of a 3D object hollow.

// Hollow a basic sketch.
firstSketch = startSketchOn(XY)
  |> startProfile(at = [-12, 12])
  |> line(end = [24, 0])
  |> line(end = [0, -24])
  |> line(end = [-24, 0])
  |> close()
  |> extrude(length = 6)
  |> hollow(thickness = 0.25)

Arguments

Name	Type	Description	Required
solid	Solid	Which solid to hollow out	Yes
thickness	number(Length)	The thickness of the remaining shell	Yes

Returns

Solid - A solid is a collection of extruded surfaces.

Description

Remove volume from a 3-dimensional shape such that a wall of the provided thickness remains around the exterior of the shape.

Function signature

hollow(
  @solid: Solid,
  thickness: number(Length),
): Solid

Examples

// Hollow a basic sketch.
firstSketch = startSketchOn(XY)
  |> startProfile(at = [-12, 12])
  |> line(end = [24, 0])
  |> line(end = [0, -24])
  |> line(end = [-24, 0])
  |> close()
  |> extrude(length = 6)
  |> hollow(thickness = 0.25)

// Hollow a basic sketch.
firstSketch = startSketchOn(-XZ)
  |> startProfile(at = [-12, 12])
  |> line(end = [24, 0])
  |> line(end = [0, -24])
  |> line(end = [-24, 0])
  |> close()
  |> extrude(length = 6)
  |> hollow(thickness = 0.5)

// Hollow a sketch on face object.
size = 100
case = startSketchOn(-XZ)
  |> startProfile(at = [-size, -size])
  |> line(end = [2 * size, 0])
  |> line(end = [0, 2 * size])
  |> tangentialArc(endAbsolute = [-size, size])
  |> close()
  |> extrude(length = 65)

thing1 = startSketchOn(case, face = END)
  |> circle(center = [-size / 2, -size / 2], radius = 25)
  |> extrude(length = 50)

thing2 = startSketchOn(case, face = END)
  |> circle(center = [size / 2, -size / 2], radius = 25)
  |> extrude(length = 50)

hollow(case, thickness = 0.5)